Summer 2021 forecast for North America: Hot, stormy East and dry West

After Mkweather Summer 2021 forecast for Europe / we have created Summer 2021 forecast for North America. Mkweather Spring 2021 forecast you will find here:

Main dominant circulation pattern (La nina) brings to the USA in 2021 above average hurricane and tornado season /, what will be associated with possibly more stormy June 2021 (according to CF22, too) in Southeast and in parts of eastern half of the USA, with increased tornado risk, while late Summer 2021 should bring the first hurricanes, it appears, that mainly into Caribbean and Florida.

Whereas La nina will be during summer weakening, hot and dry belt in southern USA isn´t already forecasted, but Southeast should be stormy and temperature neutral and storms should surprise too in northwestern Mexico, New Mexico, Arizona and southern California.

Other parts of Southwest and mainly all western half of the USA, central Canada and British Columbia however appear very hot and extremely dry, with possible severe drought and wildfires.

Hot and dry weather is forecasted too in southern Mexico, Central America and southern Caribbean.

Stormy pattern, partly thanks to possible AO+/NAO+ around July, should persist over eastern and northern Canada, too, with negative air pressure anomaly above Arctic and possible negative temperature anomalies on Arctic Ocean coast.

Negative PNA phase should contribute to large heatwaves in western USA and Canada.

Easterly QBO phase means less western flow from Pacific Ocean, what should be associated with more persisting and blocking circulation above the continent.

In the second half of Summer 2021, important parameter for initiating of the first serious hurricanes will be MJO - in case of wet MJO, conditions will be favorable. Spring 2021 brings better MJO conditions only very shortly around 7.-12. April and 7.-12. May, mainly into southern Caribbean, where the first tropical depressions of the season should appear.

Conclusions: Another hot, in eastern parts of North America stormy, in western parts predominantly dry Summer 2021 is forecasted. Some parts of Arctic should be cyclonic and colder, southern Mexico and Central America appear hot and dry. Interesting is neutral temperature, but very stormy Southeast, USA. Storms should surprise in NW Mexico and its border region in Southwest, USA, but in other parts of Southwest, in Rocky Mountains, central Canada and British Columbia, hot and dry summer, with widespread wildfires, is expected. Northeast and Great Lakes region appear hot and stormy.

Infographics - Sources:

Charts | ECMWF

CFSv2 Seasonal Climate Forecasts (

CPC - Climate Weather Linkage: Madden - Julian Oscillation (

The Quasi-biennial Oscillation (QBO) (

Expected summer temperature, precipitation and air pressure anomalies above North America in Summer 2021
Expected ENSO (La nina) evolution
Expected monthly NAO index
Tropical activity anomalies from April to September 2021
CFSv2 forecasts - temperature anomaly, precipitation anomaly and geopotential anomaly

40-day MJO forecast
Evolution of QBO in last period

Read more:

(Visited 211 times, 1 visits today)
Liked it? Take a second to support mkweather on Patreon!
Tags10 day forecast14 day forecast15 day forecast16 day forecastAdana forecastAfrica forecastAlbania weatherAleutian lowAmarilloAntarctica weatherAO indexArctic airArctic AmplificationArctic blastArctic oscillationAsia extreme weatherAsia forecastAsia severe weatherAthens forecastAtlantaAtmospheric blockingAustralia forecastAustria weatherBerlin forecastblizzardblocking patternBordeaux forecastBostonBuffaloCAIRO FORECASTCalgaryCanadaCanada long term forecastCanada severe weatherCasperCheyenneChicagoCHISINAU FORECASTcirculation forecast Mexicocirculation indices forecast Canadacirculation indices forecast USAcirculation patterns North AMericaClevelandclimate changeCOBENHAGEN FORECASTcold blastcold spellcold weatherCordoba forecastCORK FORECAST CROATIA WEATHER FORECASTCOVID-19cycloneDenverdroughtdryDRY SEASONDuluthEdmontonENSO forecast 0221ENSO pattern2021EuropeEurope extreme weatherEurope long term forecastEurope severe weatherEurope snow forecastEurope temperature forecastEXTREME CIRCULATIONextreme cold weatherEXTREME FORECASTextreme frostsEXTREME LOW TEMPERATURESEXTREME SPRING FORECASTEXTREME TEMPERATURES USAEXTREME WEATHER 2021extreme weather Canadaextreme weather Europeextreme weather USAFinland weatherfloodsforecastFORECAST ALGIERSFORECAST ANKARAFORECAST ANTALYAFORECAST BARCELONAforecast BelarusFORECAST BELEGRADEFORECAST BELFAST FORECAST BELGIUMFORECAST BIALSKO BIALAFORECAST BIRMINGHAMFORECAST BRIGHTONFORECAST BRISTOLFORECAST BRNOFORECAST BUCHARESTforecast Bulgariaforecast CanadaFORECAST CARDIFFFORECAST CHINAforecast CzechiaFORECAST DENMARKFORECAST DONETSKFORECAST DUBLINFORECAST DUBROVNIKFORECAST EDINBURGHFORECAST EGYPTFORECAST ESTONIAforecast EuropeFORECAST FRANKFURTFORECAST GENEVEFORECAST GENOAFORECAST GOTEBORGFORECAST ICELANDFORECAST SAN FRANCISCOforecast USAFrance weatherfrostsGreat Lakes forecastGreece weatherGreenland highHamburg forecastheatwaveheavy rainHelenaHELSINKI FORECASTHeraklion forecasthistoric frostshot weatherHoustonhumidhumidexhurricanehurricane forecast central americatornado forecast 2021hurricane forecast USAhurricane season forecast Caribbeanhurricane season forecast USAhurricane sforecast MexicoICE RAINIcelandic lowInnsbruck forecastInternational FallsIRELAND WEATHER FORECASTIstanbul forecastItaly weatherIzmir forecastJapan forecastJapan weatherKansas CityKARASJOK FORECASTKOELN FORECASTKorea forecastKOSOVO WEATHER FORECASTKRAKOW FORECASTKYIV FORECASTLa Coruna forecastLa nina forecast USA 2021landslidesLATVIA WEATHER FORECASTLE HAVRE FORECASTLIBYA WEATHER FORECASTLisbon forecastLITHUANIA WEATHER FORECASTLJUBLJANA FORECASTLODZ FORECASTLondon forecastlong term forecast Canadalong term forecast USAlong-term forecastLos AngelesLULEA FORECASTLUXEMBOURG WEATHER FORECASTLYON FORECASTMadrid forecastMalaga forecastMALTA WEATHER FORECASTMANCHESTER FORECASTMARSEILLE FORECASTMiamiMid-Atlantic forecastMiddle East forecastMIDDLE EAST WEATHER FORECASTMidwest forecastMILAN FORECASTMINSK FORECASTMOLDOVA WEATHER FORECASTMongolia forecastmonsoonmonsoon AsiaMONTENEGRO WEATHER FORECASTMontrealMOROCCO WEATHER FORECASTMOSCOW FORECASTMunich forecastMURCIA FORECASTNAO indexNAPLES FORECASTnegative phase Arctic oscillationnegative phase NAONETHERLANDS WEATHER FORECASTNew YorkNEW ZEALAND FORECSASTNICOSIA FORECASTNOAANorth Atlantic OscillationNORTH MACEDONIA WEATHER FORECASTNORTH PACIFIC LOW PRESSURENortheast forecastNorthern HemisphereNorthern Plains forecastNorthwest forecastNorway weatherNOVOSIBIRSK FORECASTODESA FORECASTOklahoma CityOrlandoOSLO FORECASTOttawaOULU FORECASTOymyakon forecastParis forecastPEAK WEATHERPhiladelphiaPhoenixPittsburghPODGORICA FORECASTPOLAND WEATHER FORECASTpolar vortexPorto forecastPORTUGAL WEATHER FORECASTPrague forecastPRISTINA FORECASTQuebecRABAT FORECASTRAINY SEASONRapid CityREYKYAVIK FORECASTRIGA FORECASTRocky MountainsROMANIA WEATHER FORECASTRussia extreme frostsRussia forecastSAHARA FORECASTSANKT PETERSBURG FORECASTSCOTLAND WEATHER FORECATseasonal foreast mexicoseasonal forecast CanadaSEASONAL FORECAST USASeattleSERBIA WEATHER FORECASTsevere frostsSEVERE WEATHE RUSASevilla forecastSiberian blastSiberian highSioux Fallsski center Europe forecastSKOPJE FOECASTSLOVAKIA WEATHER FORECASTSLOVENIA WEATHER FORECASTsnowstormSOFIA FORECASTSOUTH AMERICA FORECASTSOUTHERN USA FORECASTSouthwest forecastSPAIN WEATHER FORECASTSTOCKHOLM EXTREME SPRING FORECASTstormstorm forecaststormy East and dry Westsumer 2021 forecastsummer 2021 forecast Californiasummer 2021 forecast Canadasummer 2021 forecast Caribbeansummer 2021 forecast Central Americasummer 2021 forecast central Canasummer 2021 forecast east Canadasummer 2021 forecast East CoastSummer 2021 forecast for North America: Hotsummer 2021 forecast Greenlandsummer 2021 forecast loridasummer 2021 forecast Mexicosummer 2021 forecast mid atlanticsummer 2021 forecast Midwestsummer 2021 forecast New Yorksummer 2021 forecast Southeastsummer 2021 forecast Southwestsummer 2021 forecast USAsummer 2021 forecast west Canadasummer 2021 forecastNorthwestsummer 2021 forecastRocky Mountainssummer 20forecast North Americasummer forcast Msummer forecast USAsummer forecast Canadasummer forecast Northeastsummer forecast USAsummer forecast west USAsummer North America 2021SWEDEN EXTREME WEATHER FORECASTSWITZERLAND WEATHER FORECASTTALLIN FORECASTteleconnections North Americatemperature map forecast summer 2021temperature recordtemperature recordsthunderstormTIRANA FORECASTtornado forecast USA 2012tornado season 2021 USATorontoTORSHAVN FORECASTTROMSO FORECASTtropical cycloneTropical depressiontropical stormTROPICAL SYSTEMtropicaltidbitsTulsaTUNIS FORECASTTURKEY WEATHER FORECASTtyphoonUK weather forecastUKRAINE WEATHER FORECASTUSUSA extreme cold blastUSA extreme weatherUSA forecastUSA long term forecastusa precipitation forecast summer 2021USA pressure map forecast summer 2021USA prmap 2021USA summer temperature map forecastUSA summer weather mapsUsummer precipitation map forecastVancouverVILNIUS FORECASTWales weatherwarm spellwarm weatherWARSAW FORECASTWEATHER 2021 USAWEATHER FORECAST BERGENWEATHER FORECAST CANADAWEATHER FORECAST ENGLANDWEATHER FORECAST ERZURUMweather forecast europeWEATHER FORECAST USAweather outlookWEATHER OUTLOOK USAWEATHER PROGNOSIS USAwetwetterzentralewxchartsZAGREB FORECASTZURRICH FORECAST



Widget for web.